Biblatex: Don't show n.d. when no year is given

Question

I am using biblatex/biber with several bibliographies for my book, and the misc-type, which is also a single bibliography (as a chapter), for legal documents. These documents often do not have a proper date or rather the date is part of the title. However, Latex gives me a "n.d." output, and I am wondering what I can do for it to not give a "n.d." when there is no year given?

To make clear, the reason for why I don't want to use the "year" field is that I deal with very different kinds of documents, which may either have no date or the date is in the title, because of which I prefer to simply "hard-copy" the whole thing in the "howpublished"-section and need to suppress the year, if none is provided.

MWE:

\usepackage[autocite=footnote, language=german, style=authoryear-ibid, sorting=nyt, backend=biber]{biblatex}
\usepackage[bottom]{footmisc}
\bibliography{lit.bib}
\makeindex
\begin{document}

Test\autocite[2]{draftnotice}.

\printbibliography[title={EU Legal Documents}, type=misc1]

\end{document}

My lit.bib is as follows:

@misc1{draftnotice,
    Author = {{COMMUNICATION FROM THE COMMISSION}},
    Howpublished = {Draft Commission Notice of 2014 on the notion of State aid pursuant to Article 107 (1) TFEU}}

Check out my MWE on overleaf https://www.overleaf.com/5445314wzbgkh

Answer 1

Here is a way of selectively removing n.d.:

.bib file:

@misc1{draftnotice,
    Author = {{COMMUNICATION FROM THE COMMISSION}},
    Howpublished = {Draft Commission Notice of 2014 on the notion of State aid pursuant to Article 107 (1) TFEU}}
@BOOK{Dodgson,
    AUTHOR =    {Lewis Carroll},
    TITLE =     {The Hunting of the Snark},
    PUBLISHER = {Macmillan}

.tex file:

\documentclass[11pt, german]{book}
\usepackage[utf8]{inputenc}
\usepackage[autostyle]{csquotes}
\usepackage{babel} \usepackage[autocite=footnote, style=authoryear-ibid, sorting=nyt, backend=biber]{biblatex}
\usepackage[bottom]{footmisc}
\bibliography{mylit.bib}

\DefineBibliographyStrings{german}{%
nodate = {\ifboolexpr{test{\ifentrytype{misc1}} or test{\ifentrytype{misc5}}}{}{o\adddot D\adddot}},
}

\begin{document}

\vspace*{15cm}
Test\autocite[2]{draftnotice}. A book without date\autocite{Dodgson}.
\printbibliography[title={EU Legal Documents}, type=misc1]

\end{document}